tdd 진행

mobile/lib/widgets/loading_indicator.dart

@@ -0,0 +1,19 @@
+import 'package:flutter/material.dart';
+
+class LoadingIndicator extends StatelessWidget {
+  const LoadingIndicator({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          CircularProgressIndicator(),
+          SizedBox(height: 16),
+          Text('로딩 중...', style: TextStyle(fontSize: 16)),
+        ],
+      ),
+    );
+  }
+}